Sample
Baggage validates RFC 7230 token keys and delimiter-free values while resolving duplicate keys with last-value-wins semantics, and CompositeTextMapPropagator coordinates W3C TraceContext and Baggage header extraction and injection
sha256:7d96ce8c19aad54d6646ca788af8f4fcadf1aeda6a24ca303cfabacc5991341e
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- go
- Operating system
- linux
- Architecture
- x64
- Runtime
- go
- Language
- go
- Package manager
- gomod
Verification-run environments
- Execution context
- go 1.26
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- go 1.26
- Language
- go
- Package manager
- gomod
- Execution
- container · docker
CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17
Case
- Goal
- Baggage validates RFC 7230 token keys and delimiter-free values while resolving duplicate keys with last-value-wins semantics, and CompositeTextMapPropagator coordinates W3C TraceContext and Baggage header extraction and injection HOW
- Packages
-
go.opentelemetry.io/otel v1.35.0
go.opentelemetry.io/otel/trace v1.35.0
- Environment
- go
- Created
- 2026-08-17T06:53:08Z
Contract
- Baggage.New applies last-value-wins deduplication when duplicate member keys are provided, while NewMember strictly enforces RFC 7230 token syntax on keys and rejects unencoded delimiters in values
- DeleteMember produces a new immutable Baggage with the target key removed without mutating the original Baggage
- CompositeTextMapPropagator combines TraceContext and Baggage to extract valid SpanContext and percent-decoded Baggage from W3C HTTP headers
- CompositeTextMapPropagator injects traceparent, tracestate, and percent-encoded baggage headers into a carrier
- Extracting a malformed traceparent header yields an invalid SpanContext without panicking
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- otel_test.go
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9